Meizu is now teasing the community suggesting that something will be happening on May 18 (tomorrow) and many Chinese blogs suggest that their Meizu MX4 Ubuntu Edition will get released tomorrow.
But this is just a rumor, Meizu could just release a new version of FlymeOS (their Android-based mobile OS), or announce a new phone, so we will have to wait and see.
As a reminder, Canonical has teamed up with Bq and Meizu to be the first two Ubuntu phone manufacturers, despite the fact that Mark Shuttleworth has announced that vendors are queuing to release Ubuntu phones. Bq has already released their Bq Aquaris E4.5 running Ubuntu Touch, but the other one from Meizu has been announced but not available for ordering yet.
While the Bq Aquaris E4.5 Ubuntu Edition is a phone with mid-range hardware specs, the Meizu MX4 is a high-end device. Also worth mentioning, despite the fact that Meizu is selling its phones in China (and Asia, mostly), the two have announced that the release of the Meizu MX4 Ubuntu Edition will be international.